Deep-Ultraviolet–Blue-Light Surface Plasmon Resonance of Al and Alcore/Al2O3shell in Spherical and Cylindrical Nanostructures

Hu, Jinlian; Chen, Lu; Lian, Zichao; Cao, Min; Li, Haijin; Sun, Wei; Tong, Niuliu; Zeng, Haibo

doi:10.1021/jp305844g

Cited by 59 publications

(81 citation statements)

References 21 publications

(34 reference statements)

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“…[1][2][3][4][5][6][7][8] Interest in these nanoparticles has been based largely on their vivid optical properties, which are due to their collective electronic resonances, known as surface plasmons. Exquisite size and shape control has been achieved in the synthesis of noble metal nanoparticles such as gold, silver, and platinum, but the intrinsic properties and high cost of these noble metals present significant limitations for large-scale use.…”

mentioning

confidence: 99%

Aluminum Nanocrystals

McClain¹,

Schlather²,

Ringe³

et al. 2015

Nano Lett.

175

240

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Abstract:We demonstrate the facile synthesis of high purity aluminum nanocrystals over a range of controlled sizes from 70 nm to 220 nm diameter, with size control achieved through a simple modification of solvent ratios in the reaction solution. The monodisperse, icosahedral and trigonal bipyramidal nanocrystals are air-stable for weeks, due to the formation of a 2-4 nm thick passivating oxide layer on their surfaces. We show that the nanocrystals support sizedependent ultraviolet and visible plasmon modes, providing a far more sustainable alternative to gold and silver nanoparticles currently in widespread use.

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mentioning

confidence: 99%

Aluminum Nanocrystals

McClain¹,

Schlather²,

Ringe³

et al. 2015

Nano Lett.

175

240

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“…The SPR spectra of the graphene nanosheet have a peak at the petahertz frequency, which is a combination of the collective and single excitations of all valence electrons [14]. Plasmon peak mainly depends on the size and shape of the target [20,24,[40][41][42][43][44]. The energy of the plasmon peak of the monolayer graphene nanodisc, and spherical and cylindrical metals decreases with increasing diameter [24,43].…”

Section: Methodsmentioning

confidence: 99%

“…Plasmon peak mainly depends on the size and shape of the target [20,24,[40][41][42][43][44]. The energy of the plasmon peak of the monolayer graphene nanodisc, and spherical and cylindrical metals decreases with increasing diameter [24,43]. The saturating behaviour of the interband + plasmon by increasing the sheet length is understandable due to great plasmon damping occurring as a result of equal values of the energy of the interband + plasmon and electron transitions.…”

Section: Methodsmentioning

confidence: 99%

Petahertz-frequency plasmons in graphene nanopore and their application to nanoparticle sensing

et al. 2017

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Abstract. The Surface Plasmon Resonance (SPR) properties in the petahertz (10 15 Hz) frequency range for monolayer graphene nanosheet and graphene nanopore are investigated using discrete dipole approximation method. We calculate graphene refractive indices by using rst-principle density functional theory. The near-eld enhancement made by plasmon in these structures is studied by employing nite-di erence-time-domain method. For graphene nanosheets, energy of the SPR peak drops with increase in the sheet length. Also, for graphene nanopores smaller than 5 nm in length, increasing the pore diameter decreases energy of the SPR peak and for some length values like 6 nm, this energy value is raised. For larger sheets (e.g., 8 nm), SPR peak is rather unchanged by variations of the pore diameter. The SPR is used to detect nanoscale objects such as gold, silver, copper, rhodium, and aluminium oxide. If nanoscale particles are inserted into the graphene nanopore, 0.195 to 0.474 eV shift in the SPR spectra appears. Type of the presented nanoparticle can be clearly determined by measuring the energy shifts in the SPR spectra. Our results show that petahertz-frequency plasmon in graphene nanopore can be used as a nanoscale-object detection methodology.

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“…Ultraviolet surface plasmons have been studied in the past to enhance surface photochemical reactions, 9 increase sensitivity of SERS, 8 and generate photoelectron emission. 21 In the above context, aluminum has been identified as a promising ultraviolet plasmonic material for two reasons: its high bulk plasmon energy in the deep ultraviolet and low optical loss [21][22][23] entails that it provides strong ultraviolet field enhancement compared to more conventional plasmonic materials such as gold and silver.…”

Section: Ultraviolet Surface Plasmon-mediated Low Temperature Hydrazimentioning

confidence: 99%

Ultraviolet surface plasmon-mediated low temperature hydrazine decomposition

Peng

Sheldon

Liu

et al. 2015

Applied Physics Letters

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Conventional methods require elevated temperatures in order to dissociate high-energy nitrogen bonds in precursor molecules such as ammonia or hydrazine used for nitride film growth. We report enhanced photodissociation of surface-absorbed hydrazine (N2H4) molecules at low temperature by using ultraviolet surface plasmons to concentrate the exciting radiation. Plasmonic nanostructured aluminum substrates were designed to provide resonant near field concentration at λ = 248 nm (5 eV), corresponding to the maximum optical cross section for hydrogen abstraction from N2H4. We employed nanoimprint lithography to fabricate 1 mm × 1 mm arrays of the resonant plasmonic structures, and ultraviolet reflectance spectroscopy confirmed resonant extinction at 248 nm. Hydrazine was cryogenically adsorbed to the plasmonic substrate in a low-pressure ambient, and 5 eV surface plasmons were resonantly excited using a pulsed KrF laser. Mass spectrometry was used to characterize the photodissociation products and indicated a 6.2× overall enhancement in photodissociation yield for hydrazine adsorbed on plasmonic substrates compared with control substrates. The ultraviolet surface plasmon enhanced photodissociation demonstrated here may provide a valuable method to generate reactive precursors for deposition of nitride thin film materials at low temperatures.

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Deep-Ultraviolet–Blue-Light Surface Plasmon Resonance of Al and Al_core/Al₂O_3shell in Spherical and Cylindrical Nanostructures

Cited by 59 publications

References 21 publications

Aluminum Nanocrystals

Aluminum Nanocrystals

Petahertz-frequency plasmons in graphene nanopore and their application to nanoparticle sensing

Ultraviolet surface plasmon-mediated low temperature hydrazine decomposition

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